DE19937767B4 - Hand-held electric combi hammer - Google Patents

Hand-held electric combi hammer

Info

Publication number
DE19937767B4
DE19937767B4 DE1999137767 DE19937767A DE19937767B4 DE 19937767 B4 DE19937767 B4 DE 19937767B4 DE 1999137767 DE1999137767 DE 1999137767 DE 19937767 A DE19937767 A DE 19937767A DE 19937767 B4 DE19937767 B4 DE 19937767B4
Authority
DE
Germany
Prior art keywords
switch
locking
switching
chisel
hammer
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
DE1999137767
Other languages
German (de)
Other versions
DE19937767A1 (en
Inventor
Josef Anzinger
Helmut Burger
Mathias Doberenz
Manfred Ege
Erwin Manschitz
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hilti AG
Original Assignee
Hilti AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Hilti AG filed Critical Hilti AG
Priority to DE1999137767 priority Critical patent/DE19937767B4/en
Publication of DE19937767A1 publication Critical patent/DE19937767A1/en
Application granted granted Critical
Publication of DE19937767B4 publication Critical patent/DE19937767B4/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B25HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25DPERCUSSIVE TOOLS
    • B25D16/00Portable percussive machines with superimposed rotation, the rotational movement of the output shaft of a motor being modified to generate axial impacts on the tool bit
    • B25D16/006Mode changers; Mechanisms connected thereto
    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01HELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H9/00Details of switching devices, not covered by groups H01H1/00 - H01H7/00
    • H01H9/02Bases, casings, or covers
    • H01H9/06Casing of switch constituted by a handle serving a purpose other than the actuation of the switch, e.g. by the handle of a vacuum cleaner
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B25HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25DPERCUSSIVE TOOLS
    • B25D2250/00General details of portable percussive tools; Components used in portable percussive tools
    • B25D2250/255Switches
    • B25D2250/261Means for locking an operative switch on

Abstract

The hand-operated electric combination hammer for optional use as a hammer drill or chisel hammer is provided with a switching device (3, 4) for one or the other operating mode, which at the same time has a locking device (5-22) for the actuating element (17) of an ON / OFF The switch can be fixed in its ON switch position when the device user selects chisel mode. The locking device interacts with a locking switch (15), through which it is possible to fix the locking of the actuating element (17) in the ON switch position, i.e. for continuous operation, when selecting the chisel mode before or after switching on the drive, while at Drilling operation, the actuating element (17) always jumps back to the OFF switch position when released by the user.

Description

  • The invention relates to a hand-held electrical Combination hammer for user-selectable use as a hammer drill or chisel hammer, with one in the housing handle stored actuating element which can be actuated against a biasing force for one electrical ON / OFF switch, a switching device for switching from drilling to chisel operation and vice versa, as well as with one that can be activated by the switching device Locking device for the actuator in its ON switch position when chisel mode is selected.
  • Rotary hammers of this type point in the Rule one in the case handle actuating element articulated on one side for one electrical ON / OFF switch, which is often used simultaneously as an actuator, for example for a potentiometer, in particular for the continuously adjustable change of the Engine speed is used or coupled to such an actuator is. presses the device user the on the inside of the device handle lying actuator on, the motor drive of the hammer drill is ON and when released switched OFF again.
  • It is known for electric hand tools, such as Drills and impact drills, orbital sanders and jigsaws, that Switch actuator by a locking button in the ON position of the actuating element to lock. This locking button turns the electric hand tool into Continued operation, so that actuator not pressed continuously must be kept. With another reinforced Pressure on the actuator the locking button is unlocked again when the device is to be switched OFF.
  • In contrast to electric hand tools of the type mentioned, it is necessary or at least desirable in the case of rotary hammers for safety reasons that the actuating element can only be locked in the ON switch position in the chisel mode, but not in the hammer drilling mode. This problem is addressed in the publication DE 197 20 947 A1 Countered described electric combi hammer in that an existing on the rotatable switch for manual switching from drilling to chisel operation cam rotates a spring-loaded pivot lever in the direction of the cam, so that an integrally formed detent recess gets into the path of movement of a holding element, which at the free end of one at the Latch for the ON / OFF switching fixed leaf spring is formed. With this proposed solution, the pawl, that is, the actuating element for the ON / OFF switch during chisel operation, can be forcibly fixed in the ON switch position, while with the control knob rotated through 180 °, that is to say during drilling operation, the cam-operated pivot lever from the movement path of the holding element is pressed out on the pawl, so that locking of the pawl by the user is no longer possible.
  • The from the mentioned DE publication Proposed proposal has practical problems and difficulties connected: On the one hand, they are subject to the locking effect during chisel operation Elements, namely the locking recess on the swivel lever and the positively molded spring, different heavy wear due to pressure-supported abrasion and fatigue the detent spring. About that is also when choosing the chisel operation after impressing the pawl of the continuous operation forced and always set. The user must Pawl below its pivot point, usually through Relocate one working hand, do not trigger again until he chisels wants to interrupt. Now there are a number of chisel machining operations where continuous operation of the chisel undesirable is. An example is the so-called spitting, that is short successive chisel machining operations, at such as edge protrusions on concrete structures removed after removing the casing with an electric chisel become. In such processing operations, the device user wishes usually no continuous operation.
  • The invention is therefore the object based, combined rotary / chisel hammers so to improve that a Lock the switch actuator excluded during drilling operations, however with chisel operation optional and with high long-term functionality possible is.
  • The invention is in a hand-held electrical Combination hammer of the type mentioned in the introduction by means of a locking switch which, when the chisel mode is selected in a switching position, the locking device for fixing the actuating element effected in the ON switch position and ineffective in another switch position switches in which the actuator Release by the user under the action of a preload jumps back to the OFF switch position.
  • Advantageous configurations and Further developments of the inventive concept are in the following Description closer explained or in dependent claims Are defined.
  • With the invention, the following functions are performed for combination hammers of the type mentioned:
    • - During drilling operation, the actuating element for the ON / OFF switch cannot be locked Lich. Any locking previously selected is forcibly canceled as soon as the drilling mode is switched over.
    • - With chisel operation, a locking of the actuating element for the ON / OFF switch is possible in a preferred embodiment of the invention. This lock can be selected by the user and can also be selected or switched off while the machine is operating.
  • The invention and an advantageous one and proven embodiment the same are described below with reference to the drawing of an embodiment explained in more detail. It demonstrate:
  • 1 the perspective external view of a housing of an electric combi-hammer with the features of the invention;
  • 2 the schematic perspective view of a switching device for a combi hammer with optional fixing option for a switch actuating element when choosing the chisel mode;
  • 3A is a schematic plan view partial sectional view of the switching device when selecting the drilling operation;
  • 3B the schematic side view of the switching device also with selected drilling operation;
  • 4A one of the 3A corresponding top view and partial sectional view of the switching device when selecting the chisel mode; and
  • 4B one of the 3B Corresponding side view of the switching device again when choosing the chisel mode and selected locking of the switch actuating element.
  • Corresponding parts and Components are in all figures with the same reference notes characterized.
  • 1 shows the housing composed of essentially two parts of a hand-operated combination hammer. One part forms the housing shell 1 and the other the rear grip, briefly as a handle 2 designated. On the left side of the housing shell 1 is an opening for receiving and rotatable mounting of a switch that can be rotated by 180 ° 3 provided for the choice of drilling operation on the one hand and chisel operation on the other. Under control 2 is in the rear part above an actuator 17 For an ON / OFF switch (not shown), a locking switch that can be pushed back and forth across the longitudinal axis of the device 15 available.
  • The 2 illustrates the perspective view of the switching device according to the invention with locking option for the switch actuating element 17 when choosing the chisel mode. On the inside of the case shell 1 stored switch 3 is an eccentric 4 provided that when turning the switch 3 to choose the in 2 as well as in the 4A . 4B shown switching position "chisel operation" a shift rod 5 relative to the longitudinal axis of the combination hammer against the force of a pair of springs 13a . 13b towards the rear, i.e. towards the actuating element 17 , shifts. The shift rod 5 has a molded guide plate on the top 8th as well as arms standing sideways down 6 on the underside of which is also a switch rod 5 longitudinally movable magnetic holder 7 is molded. The shift rod 5 with guide plate 8th , Poor 6 and magnetic holder 7 is preferably made as a one-piece injection molded part made of synthetic resin. The guide plate 8th the shift rod 5 acts on a frame-like slide 9 that on its the guide plate 8th facing crossbar a dome-like shape or protruding as a semicircular web 11 has, which in a V-shaped vertical groove 10 on the the slider 9 facing end of the guide plate 8th intervenes. The slider 9 is one by the shape of groove 10 and molding 11 fixed pivot point perpendicular to the vertical axis of the combi hammer. The swivel angle is a few degrees and is usually between 1 ° and 6 °; in a preferred embodiment of the invention it is 2.7 ° for reasons explained in more detail below. The swivel angle for the slide 9 is due to projections molded on the underside 20 limits the angular range of the swivel angle of the slider 9 in both swiveling directions by a stop on the guide plate rounded at the front 8th limit. In the perspective view of the 2 you can also see that the two the slide 9 and the shift rod 5 towards the eccentric 4 compression springs holding preload 13a . 13b against a locking plate 14 are supported, which also under the action of the springs 13a . 13b a specific pressure on the locking switch that can be moved transversely to the longitudinal axis and to the vertical axis of the combination hammer 15 exercises and through stop pins 16 the switching path of the locking switch 15 limited in one or opposite switching direction. The stop pin 16 act against two upstanding side walls, one under the locking switch 15 sweeping extension 19 on the actuator 17 ,
  • The swiveling slide 9 , hereinafter also referred to as a swing slide, has one at the pivot point 12 opposite web on the underside, preferably integrally molded cams, pins or hooks 21 (please refer 3A . 4A ) together with and through the slider 9 around the fulcrum 12 is pivotable perpendicular to the vertical and longitudinal axes of the combination hammer. This cam, pin or hook, hereinafter only as a cam 21 referred to, is therefore within the vertical side walls of the extension 19 positioned. That cam 21 is in drilling operation, ( 3A . 3B ) in one of the locking scarves ter 15 under the action of the feathers 13a . 13b moved position from slide 9 and shift rod 5 , outside of a possible displacement of one in the extension 19 of the actuator 17 molded locking lug 22 , The locking switch is in the drilling mode 15 also in the in 3A shown position in which the slider 9 is in its one end position pivoted to the right in the longitudinal direction of the combination hammer, in which the one (in 3A top right) approach 20 on the guide plate 8th fits and next to the cam 21 a free space of a few millimeters, for example of 4 mm due to the pivoting angle of 2.70, remains free, through which the locking projection 22 of the actuator 17 can slip freely when the actuator 17 released and about its pivot axis 18 is pivoted into the OFF switching position under the action of a compression spring (not shown).
  • Instead of that through the molding 11 and the groove 10 formed joint can also be provided, the arrangement of slide 9 and guide plate 8th to be so flexible in itself that the necessary displacement path for the cam 21 required slight right / left pivoting of the slide 9 is guaranteed. The cam 21 can also be made flexible relative to the slide by selection of the material and / or by resilient articulation, so that it is in any case easily in the effective range of the locking approach 22 arrives.
  • With chisel operation on the other hand (compare 4A . 4B ) is the slider 9 and with it the cam 21 in the in 4A shown position shifted to the left. If - as in 4A shown - the locking switch 15 pressed on "lock", that is, in the cross direction of the combi hammer to the right and in 4A by pivoting the slide 9 is pivoted into its other end position, in which the other (in 4A lower) stop 20 on the guide plate 8th is present, the cam serving as a locking element now stands 21 in the return-displacement path of the in the extension 19 of the control element 17 molded locking lug 22 , The control element 17 the ON / OFF switch is locked and the combination hammer is in continuous operation when chisel mode is selected.
  • It is an essential idea of the invention that locking on continuous operation is possible on the one hand only when the chisel mode is selected, but on the other hand in this chisel operating mode locking on continuous operation before but also only after the chisel drive has been switched on by actuating the locking switch 15 can be chosen and canceled. Is the locking switch, for example, when chiseling 15 not (yet) in the in 4A illustrated locking position has been pressed, the cam remains 21 in one of the locking lugs 22 lifted position so that when you release the actuator 17 the locking approach 22 next to the cam 21 can slip, and the drive is switched off.
  • On the other hand, if the user wants to set his combi hammer to continuous operation after chiseling, he moves the locking switch 15 in the transverse direction of the device to the right in 4A shown position. He can now use the actuator 17 let go; the return of the actuator 17 and thus switching off the device drive is prevented. On the other hand, the device user either switches from chisel mode to drilling mode or shifts the locking switch 15 seen to the left in the cross-machine direction, i.e. in the in 3A position shown is now the displacement of the locking lug 22 free and the actuator 17 always jumps to the OFF position when released.
  • The one with the shift rod 5 over the arms 6 magnet holder connected in one piece 7 is used to hold and guide one at its free end ( 2 ) used switching magnets, in particular permanent magnets or another element suitable for switching the device drive electronics from drilling operation to chisel operation, for example an optical or electromagnetic switching element which triggers a switching function by relative displacement of two functionally interacting components. In the case of a magnetic switch, the magnetic holder 7 held magnet, relatively displaceable in the longitudinal axis of the combination hammer, as a rule interact with a Hall sensor (not shown) for switching the drive electronics from chisel operation to hammer drilling operation and vice versa.
  • With the invention, a switchover and locking device was created which is suitable for the generally "rough" use of combination hammers and provides a stable and long service life which is suitable and by means of which when the drilling operation is selected an immediate device shutdown is ensured when the switch actuating element is released, while the chisel operation is selected depending on the position of the locking switch that can be selected before or during operation 15 continuous operation of the electric chisel is possible when the actuating element is released.

Claims (9)

  1. Hand-held electric combination hammer for user-selectable use as a hammer drill or chisel hammer, with a handle in the housing ( 2 ) mounted, to be operated against a biasing force 17 ) for an electrical ON / OFF switch, a switching device ( 3 . 4 ) for switching from drilling to chisel operation and vice versa, as well as with a locking device that can be activated by the switching device ( 5 - 22 ) for the actuator ( 17 ) in its ON switch position when chisel mode is selected, characterized by a locking switch ( 15 ) which, when the chisel mode is selected, in a first switching position in cooperation with the locking device ( 5 - 22 ) for fixing the actuating element ( 17 ) serves in its ON switch position and in a second switch position disables the locking device in which the actuating element ( 17 ) automatically returns to the OFF switch position when released by the user under the effect of the pretensioning force.
  2. Combination hammer according to claim 1, characterized in that the locking device is one of the switching device ( 3 . 4 ) actuable shift rod ( 5 ), which is pivotally articulated to it by a longitudinal displacement of the shift rod ( 5 ) relative to the housing handle ( 2 ) sliding slide ( 9 ) acts on one of the shift rods ( 5 ) opposite side with a locking element ( 21 ) is provided that when the locking switch ( 15 ) in the "chisel mode" position by swiveling the slide ( 9 ) in the displacement path of an actuating element preloaded on the spring ( 17 ) for the ON / OFF switch existing locking lug ( 22 ) arrives and in this switching position the actuator is pushed back ( 17 ) in the OFF switch position.
  3. Combination hammer according to claim 2, characterized in that between the switching rod ( 5 ) and the slider ( 9 ) a joint ( 10 . 11 . 12 ) is available.
  4. Combination hammer according to claim 2, characterized in that the locking element ( 21 ) than with the swivel slide ( 9 ) connected cam, pin or hook is formed, the choice of chisel operation and "fixation of the actuator" ( 17 ) operated locking switch ( 15 ) in the return path of the on the actuating element ( 17 ) trained locking approach ( 22 ) arrives.
  5. Combination hammer according to claim 3 or 4, characterized by a locking switch ( 15 ) assigned locking plate ( 14 ), which pushes the back and forth movement of the locking switch, which can be operated from two sides ( 15 ) limited to one of two switching positions.
  6. Combination hammer according to claim 4, characterized in that on the changeover switch ( 3 . 4 ) an eccentric cam from drilling to chisel operation ( 4 ) available. which, when selecting the chisel mode, 9 ) via the shift rod ( 5 ) relative to the device housing ( 1 . 2 ) closer to the actuator ( 17 ) against the push-back force on the swivel slide ( 9 ) acting spring ( 13a . 13b ) moves.
  7. Combination hammer according to claim 6, characterized in that the on the swivel slide ( 9 ) acting push-back force through two pressure springs arranged in parallel and in the same plane of action ( 13a . 13b ) is applied.
  8. Combination hammer according to claim 7 in conjunction with claim 5, characterized in that the two compression springs ( 13a . 13b ) to the pivot point ( 12 ) of the swivel slide ( 9 ) away surface of the swivel slide ( 9 ) act and against the locking plate ( 14 ) of the locking switch ( 15 ) are supported.
  9. Combination hammer according to one of claims 2 to 8, characterized in that with the switching rod ( 5 ) inside the device housing ( 1 . 2 ) guided magnetic holder ( 7 ) is connected depending on the switch position of the switch ( 3 . 4 ) supplies a logical YES / NO switching signal to the control electronics of the combi hammer.
DE1999137767 1999-08-10 1999-08-10 Hand-held electric combi hammer Expired - Fee Related DE19937767B4 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE1999137767 DE19937767B4 (en) 1999-08-10 1999-08-10 Hand-held electric combi hammer

Applications Claiming Priority (10)

Application Number Priority Date Filing Date Title
DE1999137767 DE19937767B4 (en) 1999-08-10 1999-08-10 Hand-held electric combi hammer
AT00810525T AT375229T (en) 1999-08-10 2000-06-16 Hand-held electric combi hammer
EP20000810525 EP1075905B1 (en) 1999-08-10 2000-06-16 Hand-held electrical hammer
ES00810525T ES2292421T3 (en) 1999-08-10 2000-06-16 Manual electric combined hammer.
DE2000514702 DE50014702D1 (en) 1999-08-10 2000-06-16 Hand-held electric combination hammer
KR1020000041844A KR20010049832A (en) 1999-08-10 2000-07-21 Electric combi-hammer controlled by hand
CNB001225278A CN1156355C (en) 1999-08-10 2000-08-04 Manual pilot electric combiner
US09/635,282 US6550545B1 (en) 1999-08-10 2000-08-09 Hand-held electrical combination hammer drill
JP2000242213A JP4729159B2 (en) 1999-08-10 2000-08-10 Hand-held electric composite hammer device
US10/372,748 US7044234B2 (en) 1999-08-10 2003-02-24 Hand-held electrical combination hammer drill

Publications (2)

Publication Number Publication Date
DE19937767A1 DE19937767A1 (en) 2001-02-22
DE19937767B4 true DE19937767B4 (en) 2004-09-09

Family

ID=7917873

Family Applications (2)

Application Number Title Priority Date Filing Date
DE1999137767 Expired - Fee Related DE19937767B4 (en) 1999-08-10 1999-08-10 Hand-held electric combi hammer
DE2000514702 Expired - Lifetime DE50014702D1 (en) 1999-08-10 2000-06-16 Hand-held electric combination hammer

Family Applications After (1)

Application Number Title Priority Date Filing Date
DE2000514702 Expired - Lifetime DE50014702D1 (en) 1999-08-10 2000-06-16 Hand-held electric combination hammer

Country Status (8)

Country Link
US (2) US6550545B1 (en)
EP (1) EP1075905B1 (en)
JP (1) JP4729159B2 (en)
KR (1) KR20010049832A (en)
CN (1) CN1156355C (en)
AT (1) AT375229T (en)
DE (2) DE19937767B4 (en)
ES (1) ES2292421T3 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102006000287A1 (en) * 2006-06-09 2007-12-13 Hilti Ag Hand tool with vibration reducing device

Families Citing this family (28)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19942156A1 (en) * 1999-09-03 2001-03-08 Hilti Ag Switching device for multifunctional hand-held machine tools
DE10034768A1 (en) 2000-07-18 2002-02-07 Bosch Gmbh Robert Combination electric hand tool operating as hammer drill or electric chisel, has pivoted jaw catch mechanism with blocking component in handle
DE10240361A1 (en) * 2002-09-02 2004-03-11 Hilti Ag Rotating and striking electric hand machine tool
DE10326472B4 (en) * 2003-06-12 2006-03-09 Hilti Ag Connecting element for connecting a handle with a housing part and a transmission housing of a hand-held electrical device
DE102004012433A1 (en) * 2004-03-13 2005-09-29 Robert Bosch Gmbh Hand tool
US8170841B2 (en) * 2004-04-16 2012-05-01 Knowledgebase Marketing, Inc. Predictive model validation
JP4509662B2 (en) * 2004-06-16 2010-07-21 株式会社マキタ Electric impact tool
PL1640118T3 (en) * 2004-09-22 2008-04-30 Black & Decker Inc Lockable trigger button for hammer drill
DE102004052329A1 (en) * 2004-10-27 2006-05-04 Kress-Elektrik Gmbh & Co. Elektromotorenfabrik Synchronization and switching unit for one-button selector switch and power tool with synchronization and switching unit
GB0503558D0 (en) * 2005-02-22 2005-03-30 Black & Decker Inc Actuation apparatus for power tool
GB0503784D0 (en) * 2005-02-24 2005-03-30 Black & Decker Inc Hammer drill
JP4440169B2 (en) * 2005-05-16 2010-03-24 株式会社マキタ Electric impact tool
DE102006056849A1 (en) * 2006-12-01 2008-06-05 Robert Bosch Gmbh Hand tool
DE102007000362A1 (en) * 2007-07-02 2009-01-08 Hilti Aktiengesellschaft Vibrating hand tool with a lock switch of the engine switch
DE102007000470A1 (en) * 2007-08-29 2009-03-05 Hilti Aktiengesellschaft Vibrating hand tool with a lock switch of the engine switch
JP5326258B2 (en) * 2007-11-01 2013-10-30 日立工機株式会社 Impact tool
JP5180697B2 (en) * 2008-06-19 2013-04-10 株式会社マキタ Hand-held work tool
US8800835B2 (en) * 2008-07-17 2014-08-12 Stanley Fastening Systems, Lp Fastener driving device with mode selector and trigger interlock
JP5502352B2 (en) * 2009-03-23 2014-05-28 株式会社マキタ Electric tool
JP5405864B2 (en) * 2009-03-23 2014-02-05 株式会社マキタ Impact tool
US8689901B2 (en) * 2010-05-12 2014-04-08 X'pole Precision Tools Inc. Electric power tool
DE102010038750A1 (en) * 2010-08-02 2012-02-02 Robert Bosch Gmbh Electric power tool with lockable rocker switch
US9340108B2 (en) * 2013-10-17 2016-05-17 Kann Manufacturing Corporation Canopy fuel tank placement
DE102014217863A1 (en) * 2014-05-16 2015-11-19 Robert Bosch Gmbh Hand tool
JP2016068190A (en) * 2014-09-30 2016-05-09 日立工機株式会社 Electric tool
JP6380560B2 (en) * 2015-01-28 2018-08-29 工機ホールディングス株式会社 Impact tool
DE102015226440A1 (en) 2015-12-22 2017-06-22 Robert Bosch Gmbh Hand machine tool device
JP2018058183A (en) 2016-10-07 2018-04-12 株式会社マキタ Hammer drill

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19720947A1 (en) * 1996-06-15 1997-12-18 Bosch Gmbh Robert Electric combi hammer

Family Cites Families (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3854020A (en) * 1973-06-29 1974-12-10 Black & Decker Mfg Co Trigger mechanism for hand-operated power device including stationary locking device which provides lock-off and lock-on operation
US3873796A (en) * 1973-07-06 1975-03-25 Black & Decker Mfg Co Trigger mechanism for hand-operated power device including independently operable locking devices providing automatic lock off and manual lock-on operation
DE2449191C2 (en) * 1974-10-16 1988-03-24 Robert Bosch Gmbh, 7000 Stuttgart, De
US4100383A (en) * 1976-08-02 1978-07-11 Cutler-Hammer, Inc. Industrial reversing speed control trigger switches having snap-in modules
DE2747537C2 (en) * 1977-10-22 1987-01-29 Scintilla Ag, Solothurn, Ch
DE2932470A1 (en) * 1979-08-10 1981-02-26 Scintilla Ag Motor-driven hand tool, in particular commercial combination machine
DE3540964A1 (en) * 1985-11-19 1987-05-21 Bosch Gmbh Robert Motor driven tool for drilling or impact drilling
US4986369A (en) * 1988-07-11 1991-01-22 Makita Electric Works, Ltd. Torque adjusting mechanism for power driven rotary tools
US4879438A (en) * 1988-08-01 1989-11-07 Ryobi Motor Products Corp. Lock-on/lock-off switch for power tool
DE4013512A1 (en) * 1990-04-27 1991-10-31 Black & Decker Inc Switching device for switching a powered tool
DE4344849A1 (en) * 1993-12-29 1995-07-06 Fein C & E Machine tool
JP3424880B2 (en) * 1995-08-18 2003-07-07 株式会社マキタ Hammer drill
US5712543A (en) * 1995-10-31 1998-01-27 Smith & Nephew Endoscopy Inc. Magnetic switching element for controlling a surgical device
DE19545260A1 (en) * 1995-11-24 1997-05-28 Black & Decker Inc Hammer drill
CH692658A5 (en) * 1996-06-15 2002-09-13 Bosch Gmbh Robert Electric combination hammer.
GB9621202D0 (en) * 1996-10-11 1996-11-27 Black & Decker Inc Mode change switch
DE19717712A1 (en) * 1997-04-18 1998-10-22 Black & Decker Inc Hammer drill
JP3609626B2 (en) * 1998-09-16 2005-01-12 株式会社マキタ Hammer drill

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19720947A1 (en) * 1996-06-15 1997-12-18 Bosch Gmbh Robert Electric combi hammer

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102006000287A1 (en) * 2006-06-09 2007-12-13 Hilti Ag Hand tool with vibration reducing device

Also Published As

Publication number Publication date
CN1156355C (en) 2004-07-07
EP1075905A2 (en) 2001-02-14
EP1075905A3 (en) 2001-11-21
DE19937767A1 (en) 2001-02-22
JP2001062756A (en) 2001-03-13
ES2292421T3 (en) 2008-03-16
KR20010049832A (en) 2001-06-15
US7044234B2 (en) 2006-05-16
AT375229T (en) 2007-10-15
US20030121678A1 (en) 2003-07-03
DE50014702D1 (en) 2007-11-22
CN1283537A (en) 2001-02-14
EP1075905B1 (en) 2007-10-10
US6550545B1 (en) 2003-04-22
JP4729159B2 (en) 2011-07-20

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